Spring-hinge.



E. BOMM'ER SPRING HINGE.

APPLICATION FILED MAY 29. 1911.

Patented Sept. 25, 1917.

ATTOH E-BOMMER.

SPRlNG HINGE.

APPLICATIION FILED MAY 29. 1911.

SHEET 2.

Patented Sept. 25, 1917.

' 2 SHEETS ATTOIMIEX w L m a N Wm J EMIL BOMIVLEB, OF BROOKLYN, NEWYORIL.

SPRING-HINGE.

Specification of Letters Patent.- Pgttented Sept, 25, .1917,

Application filed May as, 1917. Serial No. 171,632.

To all whom it may concern:

Be it known that I, EMIL BOMMER, a citizen of the United States, and aresident of the borough of Brooklyn, county of Kings, city and State ofNew York, have invented certain new and useful Improvements inSpring-Hinges, of which the following is a full and completespecification.

My invention relates to spring-hinges for doors or other swingingstructures,and has for its object to provide a strong and readilymanufactured will permit of throwing the spring out of action whendesired, so that, at the users port 27. T this axle is secured rigidly adevice of this class which.

' coiled sprmg 3o.

collar-28, and loosely the two end portions or collars 29, which withthe longitudinal bar 29 extending at one side of the spring 23, form aconnecting and stop member for the purpose set forth below. Longitudinalmovement of this member is prevented, according to Figs. 1, to 5, byfitting it between the lower face of the transverse member 25 and theupper face of the collar 28, while according to Figs. 6 to 10, the upperand lower collars 29 engage respectively the lower surface of thetransverse member 25 and the upper surface of the transverse member 26.On the axle 27 are also mounted loosely two rings or collars-30, 30, towhich the respecchoice,'the door or other swinging member will eitherremain in any position to which tive ends of the coiled spring 23 aresecured. it may be placed, or return to a definite nor- The upper collar30 has a rigid pin 31 promal position. jecting beyond the bar 29 andadapted to The invention will now be described in deengage it at oneside, while the lower collar tail, and its novel features will then be30 has'a similar pin 31 adapted to engage pointed out in the appendedclaims. the. bar 29 on the opposite side (see Figs. 3, Two typicalembodiments of my present 4, 8 and 9). It will be understood that theinvention are illustrated by the accompanytorsional tension of thespring 23 tends to ing drawings, in whichbring the pins 31, 31 againstopposite sides Figure 1 is a front elevation of a door or edges of thebar 29 as shown best in Fig. provided with one form of my improved 3.Preferably one of the pins 31, 31 (say spring-hinge; the lower pin 31)may be connected with its Figs. 2, 3 and 4 are sections taken on linescollar at different points, to permit of ad- I 2 2, 33, and 4-4respectively of Fig. 1; justing the stiffness and torsional tension ofFig. 5 is a detail perspective view of a the spring 23. Thus, as shoWnin Figs. 4 connecting and stop member employed in and 9, the collar 30has a plurality of radial this form of. my invention; sockets 30", anyone of which may receive Fig. 6 is a front elevation of a door prothepin 31. The outer ends of the pins 31, vided with another form ofspring-hinge 31 are also adapted to engage suitable abutconstructedaccording to my invention; ments on the door; in Figs. 1 to 5 theseabut- Figs. 7, 8 and 9 are sections taken on lines ments are formed onthe vertical member 22, 7-7, 8-8, and 9-9 respectively of Fig. 6; asindicated at 32,33; in Figs. 6 to 10 they and are formed by the oppositeedges of the Fig. 10 is a perspective view of the conlongitudinal member24. 49/ necting and stop member used in this sec- In each oftheconstructions shown, the conond form of my invention. necting and stopmember 29, 29 is normally The door or other swinging member 20 isstationary, by looking to the collar 28, the provided at the hingecorner with the foladjacent end portion of said member, and lowingparts, which are connected with the means are provided for releasingsaid memdoor rigidly and form a casing for the her, so that it may movefreely with the hinge-spring and the release mechanism. door whendesired, Two spaced vertical members or plates 21, In Figs. 1 to 5, thelocking, and releasing located adjacent to each other, on one means areconstructed as follows: The lower side of the spring 23, anothervertical bar or end portion or collar 29 is provided with member 24located on the other side of said a longitudinal socket 29 (which mayalso spring, and two horizontal or transverse extend upwardly along aportion of the bar connecting members 25, 26 located at the top 29), andinto this socket is adapted to be and bottom respectively, provided withalinprojected upwardly a coupling pin 34 ing apertures for the receptionof a stamounted to slide vertically in a socket of tionary vertical axle27 resting in a supthe stationary collar 28 and pressed by a As shown inFigs. 1 and axis, and arrangedbetween theplates or,

4, the pin 34 in its normal locking position projects from the socket29",.andthis proj ecting portion. is adapted toregister (when the dooris in the closed position shown) 7 with a projection 36 on a verticallysliding releasing plunger 37 suitably guided between the plates 21, 22and, pressed upward by a spring 38. The plunger may be depressed bymeans ofcam levers 39 ful- .cruined at 40 to swing about a horizontalbars 21, 22. The drawingsshow two levers of=v thischaracter, projectingto opposite 1 sides of the door, but in practice one of these levers maybe omitted if desired.

In the construction illustrated by Figs. 6

to 10, the socket 29 for receivingthe coupling pin 34 is made at theedge'of the up ,per .collar or end portion 29 and is adapted .to bedepressedout of engagement with said socket, by the projection 36 of thevertically-sliding plunger 37 pressed upward by .a spring 38 and forwardby a spring 38".

: Thecam levers 39 (oneiof which may be the opposite edges of the bar.29, and as the omitted) arefulcrumed at 40 and serve to depress theplunger when desired. The door frame is indicated at'41.

The operation of the construction shown in Figs. 1 to 5 is. as follows:The coiled spring 23, acting on the pins 31, 31 through the collars 30,30, keeps said pins against latter is'normallystationary (being lockedto the collar 28 by the coupling pin 34), it' follows that the pins 31,31 by their engage ment with the abutments 32, 33 on the door '20. willtend to keep the latter in the closed or normal position illustrated.Let us assume that the door is now swung in such a direction as to turnthe pin 31 clockwise from the position shown in Fig. 3. The upper collar30 will move in unison with'said pin and place the spring 23 undertorsional tension, since the lower end of the spring .29, (Fig. 4).

cannot follow this clockwise movement, the pin 31 connected with suchlower end, being in engagement with the stationary bar to the normalposition shown.

door be swung in. the opposite direction (contra-clockwise in Figs. 3'and 4), the pro-' jection or abutment 33 will act on the pin 31 andthrough the collar 30 on the lower end of the spring 23, the upper endof the 7 spring being prevented from following this 1 ,movement owing'tothe engagement of the Therefore, as soon as the door is released, thespring 23 will swing it back Should the.

If then the door is swung, say clockwise, the

pin 31 and the upper end of the spring 23 will move as before, but thelower end of the spring, instead of remaining stationary, Wlll move inthe same direction, since the bar 29 is now-free to move about theaxle27 as a center. The door therefore can move to any desired position,without putting the spring 23 under torsional tension, and the door willstay in whatever-position it may be placed. If the door is. swungback toits normal, closed position, the spring 35 will cause the vpin 34 tosnap back to its normal, coupling bar 24, instead of being on the sideof the bar 22, and the'stationary collar 28 is above the spring23instead of below the same, but in principle the operation is the same,so that repetition of the explanation given is thought unnecessary.

Suitable cover plates (notshown) may be employed, if desired, to protectand incase the spring 23 and other parts.

While I have shown two preferred an satisfactoryforms of my invention,it is obvious that changes may begm'ade therein, within the spirit andscope thereof, as defined in the appended claims." I I claim: i I

1. In combination with a door or other member mounted to swing about ahinge pivot, a. torsional spring coiled to surround the 'axis of saidpivot, a stop bar extending exteriorly of said spring and adapted toswing about the axis of, said pivot, means for normally holding said barstationary, projections connectedwith the respective ends of the springand mounted to swing with such spring ends, about theaxisof said pivot,said projectionsbeing adapted to engage said bar on opposite'sides andalso to be engaged and swung by the said swinging member, and means forreleasing said bar so that it may swing with the spring.

2. In combination with a door or other member mounted to swing about apivot axis, a torsional spring coiled around said axis, a stopmeinberarranged exteriorly of the spring, means for holding said stop memberstationary, and projections connected with the respective ends of thespring and mountedto swing with such spring ends, about'the pivot'axis,said projections being adapted to engage said baron opposite sides andalso to be engaged and swung by sald swinging member.

3. In combination with a door or other swinging member, a stationaryaxle forming a hinge pivot for said member, a stationary collar securedto said axle,'.a torsional spring coiled to surround said axle, twocollars mounted on said axle loosely, one of said loose collars beingadjacent to said stationary collar, a stop bar connecting said loosecollars and extending eXteriorly of said spring, a movable pin adaptedto connect said stationary collar With the adjacent loose collar, meansfor moving said pin from its coupling position to a releasing position,and projections connected with the ends of the spring and mounted toswing With such spring ends, about the pivot axis, said pro- Intestimony, that I claim the foregoing 15' as my invention, I have signedmy name in presence of tWo subscriblng Witnesses.

EMIL BOMMER.

Witnesses:

D. LEWIS lVLA'r'rnnN, Mon M. WVEINBERG.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

